WO2023078215A1 - 线控转向限位装置及车辆 - Google Patents

线控转向限位装置及车辆 Download PDF

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Publication number
WO2023078215A1
WO2023078215A1 PCT/CN2022/128715 CN2022128715W WO2023078215A1 WO 2023078215 A1 WO2023078215 A1 WO 2023078215A1 CN 2022128715 W CN2022128715 W CN 2022128715W WO 2023078215 A1 WO2023078215 A1 WO 2023078215A1
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WO
WIPO (PCT)
Prior art keywords
limiting
main shaft
steering
limit
wire
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PCT/CN2022/128715
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English (en)
French (fr)
Inventor
刘星
赵亮
焉国辉
郭新彬
王乐乐
Original Assignee
北京车和家汽车科技有限公司
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Application filed by 北京车和家汽车科技有限公司 filed Critical 北京车和家汽车科技有限公司
Publication of WO2023078215A1 publication Critical patent/WO2023078215A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/184—Mechanisms for locking columns at selected positions

Definitions

  • the present disclosure relates to the technical field of automobile steering systems, in particular to a steering-by-wire limiting device and a vehicle.
  • wheeled vehicles driven by in-wheel motors have become a research hotspot.
  • the driving mode of the wheeled vehicle steering system is changed from the traditional hydraulic power steering system to the wire-controlled independent drive steering system.
  • the steering system of some wheeled vehicles has begun to apply the steer-by-wire technology.
  • the steering wheel and the steering actuator there is no direct connection between the steering wheel and the steering actuator in the steer-by-wire system, and they are only connected by cables.
  • the driver turns the steering wheel, and the steering wheel's angle of rotation is converted into electrical signals by sensors to drive the wheels to rotate independently. Since there is no mechanical connection between the steering wheel and the wheels, the steering wheel can be rotated without restriction, which can easily cause the wheel tie rods and other components to interfere with the wheel wells in the state of no limit, and reduce the driver's control experience on the vehicle.
  • the control of the vehicle is inconvenient, thereby affecting the safety of the vehicle.
  • the present disclosure provides a steering-by-wire limiting device and a vehicle.
  • the present disclosure provides a steering-by-wire limiting device, which includes a main shaft of a pipe column and a limiting sleeve sleeved on the outside of the main shaft of the pipe column.
  • a position nut assembly, the limit nut assembly is connected to the main shaft of the pipe string;
  • a limiting slot is provided on the limiting sleeve, and the limiting nut assembly cooperates with the limiting groove to limit the rotation angle of the main shaft of the pipe string.
  • a limit nut assembly is arranged on the main shaft of the pipe column, a limit sleeve is set on the outside of the main shaft of the pipe column, a limit slot is arranged on the limit sleeve, and the limit nut assembly is connected with the limit nut assembly. Bit slot fit.
  • the stop nut assembly includes a nut part for threaded connection with the main shaft of the pipe string and a stop part connected with the nut part and protruding from the outer surface of the nut part, so The limiting component is slidably matched with the limiting groove along the axis direction of the main shaft of the pipe string.
  • a protrusion is provided at an end of the limiting member away from the nut member.
  • the nut part is made of plastic.
  • the limiting groove extends along the axial direction of the main shaft of the pipe string, and along the extending direction of the limiting groove, the limiting groove includes a first limiting end and a second limiting end ;
  • the rotation angle range of the main shaft of the pipe string is greater than 0 degrees and less than or equal to 3600 degrees.
  • the rotation angle of the main shaft of the pipe string is less than or equal to 1440 degrees.
  • the outer circumference of the main shaft of the pipe string is provided with threads, which are threadedly connected with the stop nut assembly.
  • one end of the threaded section of the pipe string main shaft is provided with a first stopper, and the second end is provided with a second stopper, and the nut assembly is arranged between the first stopper and the second stopper. between the blocks.
  • the first stopper and the second stopper are nuts.
  • one of the first stopper and the second stopper is fixedly connected to the threaded section, and the other is detachably connected to the threaded section.
  • both ends of the main shaft of the pipe string are provided with bearings for connecting with the limiting sleeve.
  • the limiting sleeve is provided with a connecting part for connecting with the vehicle body.
  • one end of the steering-by-wire limiting device is used to connect with the steering wheel, and the other end is provided with a feel simulator.
  • the present disclosure also provides a vehicle, including the above-mentioned steering-by-wire limiting device.
  • FIG. 1 is a schematic structural diagram of a steering-by-wire limiting device according to an embodiment of the present disclosure
  • FIG. 2 is a cross-sectional view of the steering-by-wire limiting device according to an embodiment of the present disclosure
  • Fig. 3 is a sectional view at A-A in Fig. 1 .
  • the steering wheel and the steering actuator in the steer-by-wire system There is no direct connection between the steering wheel and the steering actuator in the steer-by-wire system, and they are only connected by cables.
  • the driver turns the steering wheel, and the angle of the steering wheel is converted into electrical signals by sensors to drive the wheels to rotate. Since there is no mechanical connection between the steering wheel and the wheels, the steering wheel can be rotated without restriction, which can easily cause the wheel tie rods and other components to interfere with the wheel wells in the state of no limit, and reduce the driver's control experience on the vehicle.
  • the control of the vehicle is inconvenient, thereby affecting the safety of the vehicle.
  • the embodiments of the present disclosure provide a steering-by-wire limiting device and a vehicle, which can solve the above technical problems.
  • Fig. 1 is a schematic structural view of a steering-by-wire limiting device according to an embodiment of the present disclosure
  • Fig. 2 is a cross-sectional view of the steering-by-wire limiting device according to an embodiment of the present disclosure
  • Fig. 3 is a cross-sectional view at A-A in Fig. 1 .
  • the embodiment of the present disclosure provides a steering-by-wire limiting device, which includes a column main shaft 1 and a limit sleeve 2 sleeved on the outside of the column main shaft 1 .
  • a limit nut assembly 3 is arranged between the limit sleeve 2, and the limit nut assembly 3 is connected to the column main shaft 1;
  • a limiting groove 21 is provided on the limiting sleeve 2 to limit the rotation angle of the main shaft 1 of the column.
  • the limit nut assembly 3 is arranged on the main shaft 1 of the pipe column, the limit sleeve 2 is set on the outside of the main shaft 1 of the pipe column, and the limit groove is arranged on the limit sleeve 2 21.
  • the limit nut assembly 3 cooperates with the limit groove 21.
  • part of the limit nut assembly 3 moves in the limit groove 21 .
  • the limit nut assembly 3 interferes with the end of the limit groove 21, and the limit nut assembly 3 stops moving, so that the limit nut assembly 3 and the tube
  • the movement of the main shaft 1 of the column is stopped, so that the rotation angle of the main shaft 1 of the column is limited.
  • the rotation angle of the column main shaft 1 is effectively limited, the limit nut assembly 3 is prevented from continuing to move, and the interference between the wheel tie rod and other parts and the wheel well is avoided, and the improvement of the The driver's control experience and convenience of the vehicle can improve the safety of the vehicle.
  • the above-mentioned limit nut assembly 3 includes a nut part 31 for threaded connection with the pipe string main shaft 1 and a limit part 32 connected with the nut part 31 and protruding from the outer surface of the nut part 31.
  • the limit part 32 and the The limiting slot 21 is slidingly fitted along the axis of the main shaft of the pipe string.
  • the outer circumference of the pipe string main shaft 1 is threadedly connected to the limit nut assembly 3, wherein the nut part 31 is threadedly connected with the pipe string main shaft 1, the stop part 32 protrudes from the nut part 31, and the stop part 32 Slidingly fit with the limiting groove 21. That is to say, the nut part 31 and part of the limit part 32 are located in the limit sleeve 2, and the end of the limit part 32 away from the nut part 31 extends to the end of the limit sleeve 2 through the limit groove 21 of the limit sleeve 2. outside, so that the limiting component 32 cooperates with the limiting slot 21 .
  • the nut part 31 moves along the axis direction of the pipe string main shaft 1, the stop part 32 rotates synchronously with the nut part 31, and the stop part 32 moves in the stop slot 21,
  • the limiting component 32 moves to the end of the limiting groove 21, the limiting component 32 interferes with the end of the limiting groove 21, and the limiting component 32 stops moving, so that the nut component 31 and the pipe string main shaft 1 stop moving , to achieve the limitation of the rotation angle of the main shaft 1 of the pipe string.
  • the rotation angle of the column main shaft 1 is effectively limited, the further movement of the limiting member 32 is prevented, the interference between the wheel tie rod and other parts and the wheel well is avoided, and the driver’s safety is improved.
  • the control feeling and convenience of the vehicle improve the safety of the vehicle.
  • the maximum rotatable angle of the column main shaft 1 can be changed by changing the dimension of the limiting groove 21 along the axial direction of the column main shaft 1 , thereby changing the scope of application of the steer-by-wire limiting device.
  • the limit groove 21 extends along the axis of the pipe string main shaft 1 , and the limit groove 21 includes a first limit end and a second limit end oppositely formed along the axis of the pipe string main shaft 1 .
  • the main shaft 1 of the pipe string at the first extreme position can only rotate counterclockwise.
  • the nut part 31 moves along the axis of the pipe string main shaft 1 toward the second limit end, and drives the limit part 32 to move along the limit groove 21 away from the first limit end that interferes with it.
  • the limiting part 32 moves to interfere with the second limiting end
  • the second limiting end prevents the limiting part 32 from continuing to move
  • the nut part 31 stops moving at the same time
  • the pipe string main shaft 1 stops rotating along with the nut part 31 . That is, the column spindle 1 moves to the second limit position.
  • the limiting groove 21 limits the stroke of the limiting component 32 , thereby realizing the limitation on the rotation angle of the main shaft 1 of the pipe string.
  • a protruding portion 33 is provided on the outer peripheral surface of the end of the limiting component 32 away from the nut component 31 .
  • the end portion of the limiting member 32 is provided with a raised portion 33, and the raised portion 33 is arranged on the outside of the limiting sleeve 2, and the raised portion 33 can abut against the outer wall of the limiting sleeve 2 to effectively avoid the limit
  • the component 32 is disengaged from the limiting groove 21 to ensure the stability of the limiting component 32 cooperating with the limiting groove 21, thereby ensuring the reliability of limiting the rotation angle of the main shaft 1 of the pipe string.
  • the structure of the above-mentioned protruding portion 33 may be a plurality of bumps, or a ring structure.
  • the limiting component 32 is threadedly connected with the nut component 31 .
  • the end of the limiting part 32 is provided with a raised part 33, in the assembly process of the device, firstly, the nut part 31 is threadedly connected with the pipe string main shaft 1, and then the nut part 31 is provided with the outer side of the pipe string main shaft 1.
  • Limiting sleeve 2 at the same time, the limiting groove 21 on the limiting sleeve 2 corresponds to the installation hole of the limiting component 32 provided on the outer surface of the nut part 31, and finally the limiting component 32 is inserted through the limiting groove 21 to the installation hole, and threadedly connected with the installation hole, so as to complete the assembly of the limit nut assembly 3 and the cooperation between the limit nut assembly 3 and the column main shaft 1 and the limit sleeve 2 respectively.
  • the rotation angle range of the main shaft 1 of the pipe string is greater than 0 degrees and less than or equal to 3600 degrees.
  • the stop part 32 since the nut part 31 is threadedly connected with the main shaft 1 of the pipe string, the stop part 32 cooperates with the stop slot 21 and moves along the extension direction of the stop slot 21, therefore, through the stop nut assembly 3, the The rotational displacement of the main shaft 1 of the pipe string is converted into a linear displacement of the limiting component 32 .
  • the rotation angle of the column spindle 1 may be set to be less than or equal to 1440 degrees. According to 1440 degrees, it can be calculated that the number of rotations of the main shaft 1 of the pipe string is 4 circles, that is to say, the length of the limit groove 21 is approximately equal to four times the circumference of the main shaft 1 of the pipe string, and then calculated by the diameter of the main shaft 1 of the pipe string Obtain the circumference of the main shaft 1 of the pipe string, or directly measure the circumference of the main shaft 1 of the pipe string. Finally, the size of the limit groove 21 is set according to the calculated value of 4 times the circumference of the main shaft of the pipe string, the thickness value of the limit member 32 along the extension direction of the limit groove 21, etc. 1 The limit groove 21 with 4 rotations.
  • the length dimension of the limiting slot 21 can be set according to the number of turns of the steering wheel in the vehicle.
  • the steering wheel needs to be turned 2.5 times clockwise or 2.5 times counterclockwise at the position where the vehicle is going straight.
  • the maximum number of rotations of the column main shaft 1 sets the size of the limit groove 21 so that the limit member 32 moves from one end of the limit groove 21 to the other end of the limit groove 21 and the pipe column main shaft 1 rotates 5 times. And it is necessary to ensure that when the limit nut assembly 3 is located at the center of the limit groove 21, the steering wheel can control the vehicle to go straight.
  • the effective thread refers to the length of the thread segment that the nut part 31 can perform reciprocating movement.
  • the length of the threaded section set on the pipe string main shaft 1 is equal to the length of the pipe string main shaft 1 or the length of the threaded section is close to the length of the pipe string main shaft 1.
  • the threaded section of the pipe string main shaft 1 Select a section of threaded section, a first stopper is set at one end of the threaded section, a second stopper is set at the second end, the above-mentioned nut part 31 is set between the first stopper and the second stopper, the first stopper and the second stopper
  • the two stoppers can limit the stroke of the nut part 31 . That is, the threaded section between the first stopper and the second stopper is an effective threaded section, and the nut part 31 can move between the first stopper and the second stopper, so as to limit the rotation angle of the main shaft 1 of the pipe string .
  • the above-mentioned first stopper and second stopper can be nuts, specifically, locknuts can be used to ensure that the distance between the first stopper and the second stopper remains unchanged under the non-artificial adjustment state, thereby ensuring that the nuts
  • the component 31 cooperates with the first stopper and the second stopper to limit the reliability of the rotation angle of the main shaft 1 of the pipe string.
  • a section of threaded section is set on the outer surface of the pipe string main shaft 1, the length of the threaded section is the same as the length of the above-mentioned effective thread section, that is, only the effective thread section is set on the pipe string main shaft 1.
  • a first stopper is set at one end of the effective threaded section, and a second stopper is set at the other end, so that the position of the limit nut assembly 3 is limited.
  • the first stopper or the second stopper is fixedly connected with the threaded section to prevent the limit nut assembly 3 from breaking away from the threaded section.
  • a protrusion can be provided at one end of the threaded section to limit the limit nut assembly 3 .
  • a part that can be detachably connected with the threaded section is provided at the other end of the threaded section, such as a nut, specifically, it can be a locknut, between the limit nut assembly 3 and the threaded section After the threaded sections are mated, the locknut is matched with the end of the threaded section, so as to limit the position of the limit nut assembly 3 .
  • the nut part 31 is made of non-metallic material.
  • the material of the nut part 31 As a non-metallic material, it is possible to effectively avoid abnormal noise during the rotation of the column main shaft 1 .
  • the nut part 31 is made of plastic material.
  • the plastic material has the advantages of simple processing technology, high strength, low cost, and good chemical stability.
  • both ends of the column main shaft 1 are provided with bearings 4 for connecting with the limiting sleeve 2 .
  • the limiting sleeve 2 is provided with a connecting part 5 for connecting with the vehicle body.
  • the connecting part 5 on the limit sleeve 2 By setting the connecting part 5 on the limit sleeve 2, the connection between the steering-by-wire limiting device and the vehicle body is realized, the stable connection between the steering-by-wire limiting device and the vehicle body is guaranteed, and the steering-by-wire limiting device is stable. The stability of the bit device when used.
  • An embodiment of the present disclosure also provides a vehicle, including the above-mentioned steering-by-wire limiting device.
  • the rotation angle of the main shaft 1 of the column is limited by setting the steering-by-wire limiting device in the vehicle. That is, through the cooperation of the limiting member 32 and the limiting groove 21, the rotation angle of the column main shaft 1 is effectively limited, the further movement of the limiting member 32 is prevented, the interference between the wheel tie rod and other parts and the wheel well is avoided, and the driver’s safety is improved.
  • the control feeling and convenience of the vehicle improve the safety of the vehicle.
  • one end of the steer-by-wire limiting device is used to connect with the steering wheel, and the other end is provided with a feel simulator 6. Connection, no mechanical connection, the ground condition can be simulated by setting the hand feeling simulator 6 and then transmitted to the steering wheel through the column spindle 1, so as to improve the driver's feeling of handling the vehicle.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)

Abstract

一种线控转向限位装置及车辆。线控转向限位装置包括管柱主轴（1）、限位套筒（2）和限位螺母组件（3），限位螺母组件（3）与管柱主轴（1）连接；限位套筒（2）上开设有限位槽（21），限位螺母组件（3）与限位槽（21）配合，用以限制管柱主轴（1）的转动角度。

Description

线控转向限位装置及车辆
相关申请的交叉引用
本申请基于申请号为202122663892.1、申请日为2021年11月02日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本公开涉及汽车转向系统技术领域，尤其涉及一种线控转向限位装置及车辆。
背景技术
随着电机技术和电驱动控制技术的发展，轮毂电机驱动的轮式车辆成为研究热点。同时也使得轮式车辆转向系统的驱动方式由传统的液压助力转向系统向线控独立驱动转向系统转变。目前，部分轮式车辆的转向系统已开始应用线控转向技术。
线控转向系统方向盘与转向执行机构之间无直接连接关系，仅通过线缆连接。线控独立驱动转向系统中驾驶员转动方向盘，方向盘的转角通过传感器转换为电信号驱动车轮独立转动。由于方向盘与车轮之间没有机械连接，使得方向盘可无限制的转动，极易导致车轮拉杆等部件在没有限位的状态下，与轮舱发生干涉，并且降低了驾驶员对车辆的操控感受，对车辆的控制不便，从而影响车辆的安全性。
发明内容
为了解决上述技术问题或者至少部分地解决上述技术问题，本公开提供了一种线控转向限位装置及车辆。
本公开提供了一种线控转向限位装置，包括管柱主轴和套设在所述管柱主轴的外侧的限位套筒，所述管柱主轴和所述限位套筒之间设置有限位螺母组件，所述限位螺母组件与所述管柱主轴连接；
所述限位套筒上开设有限位槽，所述限位螺母组件与所述有限位槽配合，用以限制所述管柱主轴的转动角度。
本公开提供的线控转向限位装置中，管柱主轴上设置有限位螺母组件，限位套筒套设在管柱主轴外侧，限位套筒上设置有限位槽，限位螺母组件与限位槽配合。
在管柱主轴绕其自身轴线转动过程中，部分限位螺母组件在限位槽内运动。在限位螺母组件运动至限位槽的端部时，限位螺母组件与限位槽的端部产生干涉，限位螺母组件停止运动，从而使得限位螺母组件和管柱主轴停止运动，实现了对管柱主轴转动角度的限制。即，通过限位螺母组件与限位槽的配合，有效限制了管柱主轴的转动角度，阻止限位螺母组件继续运动，避免了车轮拉杆等部件与轮舱发生干涉，提高了驾驶员对车辆的操控感受以及便利性，从而提高了车辆的安全性。
在一些实施例中，所述限位螺母组件包括用于与所述管柱主轴螺纹连接的螺母部件 和与所述螺母部件连接且凸出于所述螺母部件的外表面的限位部件，所述限位部件与所述限位槽沿所述管柱主轴的轴线方向滑动配合。
在一些实施例中，所述限位部件远离所述螺母部件的一端设置有凸起部。
在一些实施例中，所述螺母部件为塑料材质。
在一些实施例中，所述限位槽沿所述管柱主轴的轴线方向延伸，且沿所述限位槽的延伸方向，所述限位槽包括第一限位端和第二限位端；
在所述管柱主轴绕顺时针方向转动至第一极限位置时，所述限位部件与所述第一限位端抵接；
在所述管柱主轴绕逆时针方向转动至第二极限位置时，所述限位部件与所述第二限位端抵接。
在一些实施例中，所述管柱主轴的转动角度范围为大于0度且小于或等于3600度。
在一些实施例中，所述管柱主轴的转动角度小于或等于1440度。
在一些实施例中，所述管柱主轴外周设置有螺纹，与所述限位螺母组件螺纹连接。
在一些实施例中，所述管柱主轴的螺纹段的一端设置有第一挡块，第二端设置有第二挡块，所述螺母组件设置在所述第一挡块和所述第二挡块之间。
在一些实施例中，所述第一挡块和所述第二挡块为螺母。
在一些实施例中，所述第一挡块和所述第二挡块中的一个与所述螺纹段固定连接，另一个与所述螺纹段拆卸连接。
在一些实施例中，所述管柱主轴的两端均设置有轴承，用于与所述限位套筒连接。
在一些实施例中，所述限位套筒上设置有用于与车身连接的连接部件。
在一些实施例中，所述线控转向限位装置的一端用于与方向盘连接，另一端设置有手感模拟器。
本公开还提供了一种车辆，包括上述线控转向限位装置。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
为了更清楚地说明本公开实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施例所述线控转向限位装置的结构示意图；
图2为本公开实施例所述线控转向限位装置的剖视图；
图3为图1中A-A处的断面图。
其中，1-管柱主轴；2-限位套筒；21-限位槽；3-限位螺母组件；31-螺母部件；32-限位部件；33-凸起部；4-轴承；5-连接部件；6-手感模拟器。
具体实施方式
为了能够更清楚地理解本公开的上述目的、特征和优点，下面将对本公开的方案进行进一步描述。需要说明的是，在不冲突的情况下，本公开的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本公开，但本公开还可以采用其他不同于在此描述的方式来实施；显然，说明书中的实施例只是本公开的一部分实施例，而不是全部的实施例。
线控转向系统方向盘与转向执行机构之间无直接连接关系，仅通过线缆连接。驾驶员转动方向盘，方向盘的转角通过传感器转换为电信号驱动车轮转动。由于方向盘与车轮之间没有机械连接，使得方向盘可无限制的转动，极易导致车轮拉杆等部件在没有限位的状态下，与轮舱发生干涉，并且降低了驾驶员对车辆的操控感受，对车辆的控制不便，从而影响车辆的安全性。
有鉴于此，本公开实施例提供了一种线控转向限位装置及车辆，能够解决上述技术问题。
图1为本公开实施例所述线控转向限位装置的结构示意图，图2为本公开实施例所述线控转向限位装置的剖视图，图3为图1中A-A处的断面图。
如图1至图3所示，本公开实施例提供了一种线控转向限位装置，包括管柱主轴1和套设在管柱主轴1的外侧的限位套筒2，管柱主轴1和限位套筒2之间设置有限位螺母组件3，限位螺母组件3与管柱主轴1连接；
限位套筒2上开设有限位槽21，用以限制管柱主轴1的转动角度。
本公开实施例提供的线控转向限位装置中，管柱主轴1上设置有限位螺母组件3，限位套筒2套设在管柱主轴1外侧，限位套筒2上设置有限位槽21，限位螺母组件3与限位槽21配合。
在管柱主轴1绕其自身轴线转动过程中，部分限位螺母组件3在限位槽21内运动。在限位螺母组件3运动至限位槽21的端部时，限位螺母组件3与限位槽21的端部产生干涉，限位螺母组件3停止运动，从而使得限位螺母组件3和管柱主轴1停止运动，实现了对管柱主轴1转动角度的限制。即，通过限位螺母组件3与限位槽21的配合，有效限制了管柱主轴1的转动角度，阻止限位螺母组件3继续运动，避免了车轮拉杆等部件与轮舱发生干涉，提高了驾驶员对车辆的操控感受以及便利性，从而提高了车辆的安全性。
具体地，上述限位螺母组件3包括用于与管柱主轴1螺纹连接的螺母部件31和与螺母部件31连接且凸出于螺母部件31的外表面的限位部件32，限位部件32与限位槽21沿管柱主轴的轴线方向滑动配合。
上述限位螺母组件3中，管柱主轴1的外周螺纹连接有限位螺母组件3，其中，螺母部件31与管柱主轴1螺纹连接，限位部件32凸出于螺母部件31，限位部件32与限位槽21滑动配合。也就是说，螺母部件31和部分限位部件32位于限位套筒2内，限 位部件32远离螺母部件31的一端经限位套筒2的限位槽21延伸至限位套筒2的外侧，以使限位部件32与限位槽21配合。
在管柱主轴1绕其自身轴线转动过程中，螺母部件31沿管柱主轴1的轴线方向运动，限位部件32随螺母部件31同步转动，并且限位部件32在限位槽21内运动，在限位部件32运动至限位槽21的端部时，限位部件32与限位槽21的端部产生干涉，限位部件32停止运动，从而使得螺母部件31和管柱主轴1停止运动，实现了对管柱主轴1转动角度的限制。即，通过限位部件32与限位槽21的配合，有效限制了管柱主轴1的转动角度，阻止限位部件32继续运动，避免了车轮拉杆等部件与轮舱发生干涉，提高了驾驶员对车辆的操控感受以及便利性，从而提高了车辆的安全性。
并且，可通过改变限位槽21沿管柱主轴1的轴向方向的尺寸，改变管柱主轴1可转动的最大角度，从而改变本线控转向限位装置的适用范围。
具体地，限位槽21沿管柱主轴1的轴线方向延伸，且限位槽21包括沿管柱主轴1的轴线方向相对形成的第一限位端和第二限位端。
在管柱主轴1绕顺时针转动时，螺母部件31沿管柱主轴1的轴线方向向靠近第一限位端的方向移动，限位部件32与螺母部件31同步移动。在限位部件32移动至与第一限位端发生干涉时，第一限位端阻止限位部件32继续运动，螺母部件31同时停止运动，管柱主轴1随螺母部件31停止转动。即，管柱主轴1运动至第一极限位置。
位于第一极限位置的管柱主轴1仅可绕逆时针转动。螺母部件31沿管柱主轴1的轴线方向向靠近第二限位端的方向运动，带动限位部件32沿限位槽21向远离与其发生干涉的第一限位端运动。在限位部件32运动至与第二限位端发生干涉时，第二限位端阻止限位部件32继续运动，螺母部件31同时停止运动，管柱主轴1随螺母部件31停止转动。即，管柱主轴1运动至第二极限位置。
通过限位部件32分别与第一限位端和第二限位端配合，实现了限位槽21对限位部件32的行程的限制，从而实现了对管柱主轴1转动角度的限制。在对管柱主轴1的最大转动角度进行调节时，仅需改变限位槽21沿管柱主轴1的轴线方向的尺寸，即，改变第一端部和第二端部之间的距离。本线控转向限位装置结构简单，成本较低。
如图2至图3所示，在一些实施例中，限位部件32远离螺母部件31的一端的外周面设置有凸起部33。
上述限位部件32的端部设置凸起部33，凸起部33设置在限位套筒2的外侧，且凸起部33可与限位套筒2的外壁抵接，以有效避免限位部件32与限位槽21脱离，保证限位部件32有限位槽21配合的稳定性，从而保证了对管柱主轴1转动角度进行限制的可靠性。
具体地，上述凸起部33的结构可以为多个凸块，或环形结构。
在一些实施例中，限位部件32与螺母部件31螺纹连接。
由于限位部件32的端部设置有凸起部33，在本装置装配过程中，首先将螺母部件31与管柱主轴1螺纹连接，然后在设置有螺母部件31的管柱主轴1外侧套设限位套筒 2，同时，将限位套筒2上的限位槽21与螺母部件31外表面上设置的限位部件32的安装孔对应，最后将限位部件32经限位槽21插入至安装孔中，与安装孔螺纹连接，从而完成限位螺母组件3的装配、以及限位螺母组件3分别与管柱主轴1和限位套筒2的配合。
在一些实施例中，管柱主轴1的转动角度范围为大于0度且小于或等于3600度。
在一些实施例中，由于螺母部件31与管柱主轴1螺纹连接，限位部件32与限位槽21配合，并沿限位槽21的延伸方向运动，故，通过限位螺母组件3，将管柱主轴1的转动位移转化为限位部件32的直线位移。在对管柱主轴1的转动角度进行限定时，首先根据预设的转动角度范围计算出管柱主轴1最大转动圈数，并根据管柱主轴1的直径计算得到管柱主轴1的周长，或直接测量得到管柱主轴1的周长，然后根据最大转动圈数以及管柱主轴1的周长，计算出长度数值a，根据计算得到的长度数值a对限位槽21的长度值进行取值。
具体地，可以将管柱主轴1的转动角度设置为小于或等于1440度。根据1440度可计算得到管柱主轴1的转动圈数为4圈，也就是说，限位槽21的长度至近似等于管柱主轴1周长的4倍，然后通过管柱主轴1的直径计算得到管柱主轴1的周长，或直接测量得到管柱主轴1的周长。最后根据4倍管柱主轴1周长的计算值、限位部件32沿限位槽21的延伸方向的厚度值等数据对限位槽21的尺寸进行设定，从而得到可满足限制管柱主轴1转动圈数为4圈的限位槽21。
但不限于此，可根据车辆中方向盘需要转动的圈数对限位槽21的长度尺寸进行设置。
例如，需方向盘在保持车辆直行的位置处，可顺时针转动2.5圈，也可逆时针转动2.5圈，即管柱主轴1需可转动5圈，此时，需根据管柱主轴1的周长以及管柱主轴1最大转动圈数设定限位槽21的尺寸，以满足限位部件32从限位槽21一端移动到限位槽21的另一端管柱主轴1转动5圈。并且需保证在限位螺母组件3位于限位槽21的中心位置时，方向盘可控制车辆直行。
另外，还可以通过改变管柱主轴1外周设置的有效螺纹的长度实现对限制管柱主轴1的转动角度的控制，从而对限位槽21与限位部件32之间的限位配合起到辅助作用，进一步保证对管柱主轴1的转动角度进行限制的可靠性。
具体地，有效螺纹是指螺母部件31可进行往返运动的螺纹段的长度。例如，管柱主轴1设置的螺纹段的长度与管柱主轴1的长度相等或螺纹段的长度接近管柱主轴1的长度，根据限位槽21设置的位置，在管柱主轴1的螺纹段中选取一段螺纹段，在该螺纹段的一端设置第一挡块，第二端设置第二挡块，第一挡块和第二挡块之间设置上述螺母部件31，第一挡块和第二挡块可限制螺母部件31的行程。即，第一挡块和第二挡块之间的螺纹段为有效螺纹段，螺母部件31可在第一挡块和第二挡块之间运动，以实现对管柱主轴1转动角度的限制。
上述第一挡块和第二挡块可以为螺母，具体可以采用防松螺母，以保证第一挡块和 第二挡块之间的距离在非人为调整状态下，保持不变，从而保证螺母部件31与第一挡块和第二挡块配合以限制管柱主轴1转动角度的可靠性。
或者，对应限位槽21的设置的位置，在管柱主轴1的外表面设置一段螺纹段，螺纹段的长度与上述的有效螺纹段的长度相同，即，在管柱主轴1上仅设置有效螺纹段，在有效螺纹段的一端设置第一挡块，另一端设置第二挡块，从而实现对限位螺母组件3的位置进行限制。
其中，第一挡块或第二挡块与螺纹段固定连接，以避免限位螺母组件3与螺纹段脱离，例如可以在螺纹段的一端设置凸起，以对限位螺母组件3限位。为了便于限位螺母组件3与螺纹段之间的装配，在螺纹段的另一端设置可与螺纹段拆卸连接的部件，例如螺母，具体地，可以为防松螺母，在限位螺母组件3与螺纹段配合后，将防松螺母与螺纹段的端部配合，以实现对限位螺母组件3的限位。
在一些实施例中，螺母部件31为非金属材质。
通过将螺母部件31的材料设置为非金属材质，可有效避免管柱主轴1在转动过程中发生异响。
具体地，螺母部件31为塑料材质。
塑料材质具有加工工艺简单、强度大、成本低、以及化学稳定性好的优势，通过将螺母部件31设置为塑料材质，在管柱主轴1转动过程中可有效避免发生异响的同时，可有效提高螺母部件31的使用寿命，从而保证了本线控转向限位装置的使用寿命。
在一些实施例中，管柱主轴1的两端均设置有轴承4，用于与限位套筒2连接。
通过在上述管柱主轴1的两端设置轴承4，将管柱主轴1与限位套筒2限位连接，轴承4对管柱主轴1和限位套筒2起到支撑作用，保证了管柱主轴1相对限位套筒2转动的稳定性。
在一些实施例中，限位套筒2上设置有用于与车身连接的连接部件5。
通过在限位套筒2上设置连接部件5，实现了本线控转向限位装置与车身的连接，保证了本线控转向限位装置与车身之间的稳定连接，以及本线控转向限位装置使用时的稳定性。
本公开实施例还提供了一种车辆，包括上述线控转向限位装置。
上述车辆中，通过在车辆中设置线控转向限位装置，实现了对管柱主轴1转动角度的限制。即，通过限位部件32与限位槽21的配合，有效限制了管柱主轴1的转动角度，阻止限位部件32继续运动，避免了车轮拉杆等部件与轮舱发生干涉，提高了驾驶员对车辆的操控感受以及便利性，从而提高了车辆的安全性。
如图1至图2所示，在一些实施例中，线控转向限位装置的一端用于与方向盘连接，另一端设置有手感模拟器6，由于方向盘与车辆的转向器之间仅为电连接，无机械连接，通过设置手感模拟器6可对地面情进行模拟然后通过管柱主轴1传递至方向盘中，以提高驾驶员对车辆的操控感受。
需要说明的是，在本文中，诸如“第一”和“第二”等之类的关系术语仅仅用来将 一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上所述仅是本公开的具体实施方式，使本领域技术人员能够理解或实现本公开。对这些实施例的多种修改对本领域的技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本公开的精神或范围的情况下，在其它实施例中实现。因此，本公开将不会被限制于本文所述的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (15)

  1. 一种线控转向限位装置，包括管柱主轴(1)和套设在所述管柱主轴(1)的外侧的限位套筒(2)，所述管柱主轴(1)和所述限位套筒(2)之间设置有限位螺母组件(3)，所述限位螺母组件(3)与所述管柱主轴(1)连接；
    所述限位套筒(2)上设置有限位槽(21)，所述限位螺母组件(3)与所述有限位槽(21)配合，用以限制所述管柱主轴(1)的转动角度。
  2. 根据权利要求1所述的线控转向限位装置，其中，所述限位螺母组件(3)包括用于与所述管柱主轴(1)螺纹连接的螺母部件(31)和与所述螺母部件(31)连接且凸出于所述螺母部件(31)的外表面的限位部件(32)，所述限位部件(32)与所述限位槽(21)沿所述管柱主轴的轴线方向滑动配合。
  3. 根据权利要求2所述的线控转向限位装置，其中，所述限位部件(32)远离所述螺母部件(31)的一端设置有凸起部(33)。
  4. 根据权利要求2或3所述的线控转向限位装置，其中，所述螺母部件(31)为塑料材质。
  5. 根据权利要求2至4中任一项所述的线控转向限位装置，其中，所述限位槽(21)沿所述管柱主轴(1)的轴线方向延伸，且沿所述限位槽(21)的延伸方向，所述限位槽(21)包括第一限位端和第二限位端；
    在所述管柱主轴(1)绕顺时针方向转动至第一极限位置时，所述限位部件(32)与所述第一限位端抵接；
    在所述管柱主轴(1)绕逆时针方向转动至第二极限位置时，所述限位部件(32)与所述第二限位端抵接。
  6. 根据权利要求5所述的线控转向限位装置，其中，所述管柱主轴(1)的转动角度范围为大于0度且小于或等于3600度。
  7. 根据权利要求6所述的线控转向限位装置，其中，所述管柱主轴(1)的转动角度小于或等于1440度。
  8. 根据权利要求1至7中任一项所述的线控转向限位装置，其中，所述管柱主轴(1)外周设置有螺纹，与所述限位螺母组件(3)螺纹连接。
  9. 根据权利要求8所述的线控转向限位装置，其中，所述管柱主轴(1)的螺纹段的一端设置有第一挡块，第二端设置有第二挡块，所述螺母组件(3)设置在所述第一挡块和所述第二挡块之间。
  10. 根据权利要求9所述的线控转向限位装置，其中，所述第一挡块和所述第二挡块为螺母。
  11. 根据权利要求9或10所述的线控转向限位装置，其中，所述第一挡块和所述第二挡块中的一个与所述螺纹段固定连接，另一个与所述螺纹段拆卸连接。
  12. 根据权利要求1至11中任一项所述的线控转向限位装置，其中，所述管柱主轴(1)的两端均设置有轴承(4)，用于与所述限位套筒(2)连接。
  13. 根据权利要求1至12中任一项所述的线控转向限位装置，其中，所述限位套筒(2)上设置有用于与车身连接的连接部件(5)。
  14. 根据权利要求1至13中任一项所述的线控转向限位装置，其中，所述线控转向限位装置的一端用于与方向盘连接，另一端设置有手感模拟器(6)。
  15. 一种车辆，其特征在于，包括权利要求1至14中任一项所述的线控转向限位装置。
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CN216709404U (zh) * 2021-11-02 2022-06-10 北京车和家汽车科技有限公司 线控转向限位装置及车辆

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